Her idea follows in the footsteps of comedian Sarah Millican's recent Twitter campaign to connect people who were spending Christmas Day alone.

"The main rule is to be kind," said Millican. "We're all here for each other."

I don't know the full history of St Valentine but I do know it was a feast day to celebrate love and affection, not a commercial day to make anyone feel lesser, isolated or alone. So I shall be on twitter all day to chat to anyone feeling lonely. Please RT #Hartsvalentineday

End of Twitter post by @mermhart

So prepare questions, worries, ideas, and I shall impart wisdom where I can but basically just know you are loved and not alone and we shall hang out and play. See you tomorrow. #Hartsvalentineday